Gist Support for Typecho (Modern browser only)

typecho.gist.js

/*! MIT License: (C)opyright Jixun<http://jixun.org/> */
// Usage:
// gist:JixunMoe/cd168a63b7c5a1cc3d93

(function (window, document) {
	addEventListener('DOMContentLoaded', main, false);

	function createGistLink (gist) {
		return create('a', {
			href: 'https://gist.github.com/' + gist,
			target: '_blank',
			textContent: 'gist:' + gist
		});
	}

	function isParentCodeOrPre (ref, bNoMoreCheck) {
		var parent = getParent(ref);
		var tagName = parent.tagName;
		if (tagName == 'CODE' || tagName == 'PRE')
			return true;

		if (bNoMoreCheck)
			return false;

		return isParentCodeOrPre(parent, true);
	}

	function getParent(ref) {
		return ref.parentNode || ref;
	}

	function insertAfter(node, ref) {
		ref.parentNode.insertBefore(node, ref.nextSibling);
	}
	function create(tag, attr) {
		var el = document.createElement(tag);
		for(var x in attr) {
			if (attr.hasOwnProperty(x)) {
				el[x] = attr[x];
			}
		}
		return el;
	}

	function appendHead (ref) {
		document.head.appendChild(ref);
	}

	var gistHandlers = { };
	function handleGistAppend (ref, gist) {
		var name = '__GIST_' + gist.replace(/\W/g, '_');
		var doInsert;
		if (!gistHandlers[gist]) {
			gistHandlers[gist] = [];
			doInsert = 1;
		}
		gistHandlers[gist].push(ref);

		window[name] = function (data) {
			delete window[name];

			gistHandlers[gist].forEach(function (ref) {
				insertAfter(create('section', {
					innerHTML: data.div
				}), ref);
			});
			
			appendHead(create('link', {
				rel: 'stylesheet',
				href: data.stylesheet
			}));
		};
		
		if (doInsert) {
			appendHead(create('script', {
				src: 'https://gist.github.com/' + gist + '.json?callback=' + name
			}));
		}
	}

	function main () {
		var treeWalker = document.createTreeWalker(
			document.body,
			NodeFilter.SHOW_TEXT,
			{ acceptNode: function(node) {
				// return node.textContent.trim().length ? NodeFilter.FILTER_ACCEPT : NodeFilter.FILTER_REJECT;
				return node.textContent.trim().length ? 1 : 2;
			} },
			false
		);

		var nodes = [];
		while(node = treeWalker.nextNode()) {
			nodes.push(node);
		}

		nodes.forEach(function (node) {
			var text = node.textContent;
			if (text)
				procMatch(node, text, text.match(/gist:(\w+\/\w+)/i));
		});

		function procMatch (node, text, matchData) {
			if (!matchData || isParentCodeOrPre(node))
				return ;

			var parent = getParent(node);
			var lastPos = 0;
			var lastRef = node;
			text.replace(/gist:(\w+\/\w+)/ig, function (z, gist, pos) {
				var ref = lastRef.splitText(pos - lastPos);
				lastRef = ref.splitText(z.length);
				parent.insertBefore(createGistLink(gist), lastRef);
				parent.removeChild(ref);
				lastPos = pos + z.length;
			});

			// 全文
			if ('P' == parent.tagName && text == matchData[0]) {
				handleGistAppend(parent, matchData[1]);
			}
		}
	}
})(window, document);

typecho.gist.min.js

/*! MIT License: (C)opyright Jixun<http://jixun.org/> */
!function(t,e){function n(t){return a("a",{href:"https://gist.github.com/"+t,target:"_blank",textContent:"gist:"+t})}function r(t,e){var n=i(t),o=n.tagName;return"CODE"==o||"PRE"==o?!0:e?!1:r(n,!0)}function i(t){return t.parentNode||t}function o(t,e){e.parentNode.insertBefore(t,e.nextSibling)}function a(t,n){var r=e.createElement(t);for(var i in n)n.hasOwnProperty(i)&&(r[i]=n[i]);return r}function c(t){e.head.appendChild(t)}function u(e,n){var r,i="__GIST_"+n.replace(/\W/g,"_");s[n]||(s[n]=[],r=1),s[n].push(e),t[i]=function(e){delete t[i],s[n].forEach(function(t){o(a("section",{innerHTML:e.div}),t)}),c(a("link",{rel:"stylesheet",href:e.stylesheet}))},r&&c(a("script",{src:"https://gist.github.com/"+n+".json?callback="+i}))}function f(){function t(t,e,o){if(o&&!r(t)){var a=i(t),c=0,f=t;e.replace(/gist:(\w+\/\w+)/gi,function(t,e,r){var i=f.splitText(r-c);f=i.splitText(t.length),a.insertBefore(n(e),f),a.removeChild(i),c=r+t.length}),"P"==a.tagName&&e==o[0]&&u(a,o[1])}}for(var o=e.createTreeWalker(e.body,NodeFilter.SHOW_TEXT,{acceptNode:function(t){return t.textContent.trim().length?1:2}},!1),a=[];node=o.nextNode();)a.push(node);a.forEach(function(e){var n=e.textContent;n&&t(e,n,n.match(/gist:(\w+\/\w+)/i))})}addEventListener("DOMContentLoaded",f,!1);var s={}}(window,document);